Guide, 6 steps

Teaching your puppy to accept handling of mouth, ears and paws

You need

Step 1: Start where they like it: chest, shoulders, back. Touch, then treat.
Step 2: Paws: touch a paw, treat. Then hold it for a second. Later, spread the toes and look at the nails.
Step 3: Ears: rub the base, lift the ear and peek inside for a second. Treat.
Step 4: Mouth: lift the lip for a second, treat. When that's easy, open the mouth a little.
Step 5: Treats flow while you're touching; they stop when you stop. Keep sessions short and always end on a success.
Step 6: If they pull away, stiffen or growl, go back a step. Change one thing at a time: duration, pressure or body part. If they struggle or try to bite, stop and try something easier later; if it keeps happening, ask your vet.

Touching one area seems to hurt (whimpering, crying, always pulling away from the same spot).
You notice something off: smelly or dirty ear, broken nail, wound or limping.
Fear of handling is getting worse or they try to bite: ask your vet or a behavior professional for help.

This is general information, not a diagnosis, and it doesn't replace your vet, who always has the final say.